Christopher Hitchen's has a great piece at FrontPageMag.com. Here's snippit:

In one way, the church's "peace at any price" policy is a historical improvement. The last instance I can find of Rome supporting a war was when it blessed Gen. Franco's invasion of Spain, at the head of an army of Muslim mercenaries who were armed and trained by Hitler and Mussolini. And everybody knows of the Crusades, which were launched against Christian 'heretics' as well as against Muslims and (invariably) the Jews. But one wonders how the theory of "just war," largely evolved by Catholic intellectuals such as Augustine and Aquinas, ever managed to endorse the use of force. As applied these days, it appears to commit everybody but Saddam Hussein to an absolute renunciation of violence.